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Blood, 1 June 2004, Vol. 103, No. 11, pp. 4023-4027.
Prepublished online as a Blood First Edition Paper on February 5, 2004; DOI 10.1182/blood-2003-11-3758.
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CLINICAL OBSERVATIONS, INTERVENTIONS, AND THERAPEUTIC TRIALS
Survival of children with sickle cell disease
Charles T. Quinn,
Zora R. Rogers, and
George R. Buchanan
From the Division of Hematology-Oncology, Department of Pediatrics, University of Texas Southwestern Medical Center at Dallas, and Center for Cancer and Blood Disorders, Children's Medical Center Dallas, Dallas, TX.
Contemporary survival data are not available for children with sickle cell disease (SCD). The few previous childhood SCD cohort studies do not reflect the benefits of modern therapy. We defined an inception cohort of newborns with sickle cell anemia (SS), sickle- °-thalassemia (S °), sickle-hemoglobin C disease (SC), or sickle- +-thalassemia (S +) who were identified by newborn screening and followed for up to 18 years. The incidence of death and stroke were calculated. Overall survival, SCD-related survival (considering only SCD-related deaths), and strokefree survival were determined. The 711 subjects provided 5648 patient-years of observation. Twenty-five subjects died; mean age at death was 5.6 years. Five patients died from infection. Thirty had at least one stroke. Among SS and S ° subjects (n = 448), the overall rates of death and stroke were 0.59 and 0.85/100 patient-years. Survival analysis of SS and S ° subjects predicted the cumulative overall, SCD-related, and stroke-free survival to be 85.6%, 93.6%, and 88.5% by 18 years of age. No SCD-related deaths or strokes occurred in SC or S + subjects (n = 263). Childhood mortality from SCD is decreasing, the mean age at death is increasing, and a smaller proportion of deaths are from infection.

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